Adding Second MPPT Charge Reg.

Started by phonetic, January 08, 2012, 09:00:08 PM

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phonetic

With PVs being so cheap at the moment, Im looking to upgrade my Installation, currently have 12 190w monos config as 3 in series 4 strings into a Classic 150, I plan to use my surplus Outback MX60..with extra 8 panels 190w monos as 2 in series 4 strings.
The question is would a second charge reg confuse the Classic 150, Im thinking to set the MX60 not to equalise charge,  set boost and float voltages as the Classic 150 ?
Regards
Frank
Home:
3.04kW Grid Tie.
Weekender:
6.08kW Off Grid. DC & AC coupled
32 of 190W (12+12 Array DC) (8 Array AC)
Midnite Classic 150 & Classic Lite 150
1.5KW AC coupled Grid Inverter
8 of 600 amp hour Surrette S600 flooded cell battery bank 24 volt 1200 amphour
Outback VFX3024E Inverter Charger, Mate 2.

boB

Quote from: phonetic on January 08, 2012, 09:00:08 PM
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The question is would a second charge reg confuse the Classic 150, Im thinking to set the MX60 not to equalise charge,  set boost and float voltages as the Classic 150 ?
Regards
Frank


Naahhhh...   No more than if you had 2 MX60s  or 2 Classics.  You can always adjust the voltage readings a wee bit if the inaccuracy gets in the way in MPPT / Bulk charge mode, but usually a couple tenths of a volt won't even matter.  They may not go to float at the same time, but not usually a biggie.

boB

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